Arrowood Vineyards and Winery, 14347 Sonoma Hwy., Glen Ellen; 1 (800) 938-5170. Arrowood Vineyards and Winery is one of the wineries of the Robert Mondavi family. Tours are by appointment and occur daily at 10:30 a.m. and 2:30 p.m. After the tour, tasting is offered for an additional fee. Open daily from 10 a.m. to 4:30 p.m.

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Beringer Vineyards, 2000 Main St., St. Helena; (707) 963-7115. The 30-minute tour of the historic grounds and facilities of Beringer Vineyards includes a stroll through caves dug by Chinese laborers in the late 1800s. The tour is followed by a tasting of three wines, the selection of which changes daily (allow an additional 15 to 20 minutes for the tasting). Tours start every half-hour beginning at 9:30 a.m.; the final four commence at 5 p.m. (4 p.m. during the winter, starting Nov. 1). No advance reservations are necessary or taken. Tours are $5 per person.

Buena Vista Carneros, 18000 Old Winery Rd., Sonoma; 1 (800) 926-1266. Peruse the art gallery featuring local Artists-in-Residence, or take a self-guided tour of the winery. Open from 10:30 a.m. to 5 p.m. daily.

Clos Pegase Winery, 1060 Dunaweal Lane, Calistoga; (707) 942-4981. Half-hour tours of the winery and caves commence at 11 a.m. and 2 p.m. daily. No charge. At 11 a.m. on the third Saturday of each month (except December and January), proprietor Jan Shrem, an art collector, narrates in the cave a slide show of art inspired by wine. The slide show is free, but reservations are requested. For $25 per person, the slide presentation can be followed by a lunch and wine-tasting; luncheon reservations are required.

Ferrari-Carano Vineyards and Winery, 8761 Dry Creek Rd., Healdsburg; (707) 433-6700. The gardens of Villa Fiore are spectatcular, complete with waterfalls, gazebos, and a brand-new greenhouse. Reservations for tours must be made two weeks in advance. Open from 10 a.m. to 5 p.m. daily, there is $2.50 tasting fee that is refundable with a $20 wine purchase.

Hakusan Sake Gardens, One Executive Way, Napa: (707) 258-6160. There's more than just wine produced in the area -- visit the scenic Japanese gardens of Hakusan, Napa Valley's only Sake producer. The tasting room is open from 10 a.m. to 5 p.m. every day except Wednesday.

Niebaum-Coppola, 1991 St. Helena Highway, Rutherford; (707) 968-1100. Visit the winery of director Francis Ford Coppola. Visitors can view documents and artifacts from the estate at the Inglenook Chateau and Centennial Museum, as well as memorabilia from many of Coppola's films. Tours are given daily at 10:30 a.m. and 2:30 p.m. on a first come-first serve basis. There is no charge to visit the museum.

Jarvis Winery, 2970 Monticello Road, Napa; (707) 255-5280. While most wineries use their caves primarily to store aging wine, Jarvis is notable for having built the entire facility underground -- offices, fermentation rooms and so forth. At 45,000 square feet, the cave is believed to be the largest in the Napa Valley. Ninety-minute tours start at 1:30 p.m. Mondays through Fridays, and 10:30 a.m. and 1:30 p.m. Saturdays. The cost, which includes a tasting of wines and appetizers, is $10 per person.

Pine Ridge Winery, 5901 Silverado Trail, Napa; (707) 253-7500. Visitors to the winery's tasting room can stroll into the adjoining cave at will, but a formal tour and barrel tasting in the chamber requires an appointment. The tasting room is open 11 a.m. to 5 p.m. daily, with tours at 10:15 a.m., 1 p.m. and 3 p.m. Cost is $3 per person.

Robert Mondavi, 7801 St. Helena Hwy., Oakville; (707) 226-1335. Open daily from 10 a.m. to 4:30 p.m. Tours are given by appointment only, fee is $10. Tasting is free with the tour.

Rodney Strong Vineyards, 11455 Old Redwood Highway, Healdsburg, (707) 431-1533. The Concert Green at Rodney Strong Vineyards is the place for jazz events, complete with food and wine during the summer months. Call for more information. Tours of the winery are at 11 a.m. and 3 p.m., open daily from 10 a.m. to 5 p.m.

Rutherford Hill Winery, 200 Rutherford Hill Road, Rutherford; (707) 963-1871. Thirty-minute tours of the winery and one wing of one of the larger wine caves in the Napa Valley start at 11:30 a.m., 1:30 p.m. and 3:30 p.m. Mondays through Fridays, and at 11:30 a.m., 12:30 p.m., 1:30 p.m., 2:30 p.m. and 3:30 p.m. Saturdays and Sundays. No charge. Tasting fee is $4 and includes the glass.

Schramsberg Vineyard Co., 1400 Schramsberg Road, between St. Helena and Calistoga; (707) 942-4558. Schramsberg's 2 miles of historic caves -- dug by Chinese laborers starting in 1862 -- are included in tours that begin at 10 a.m., 11:30 a.m., 1 p.m. and 2:30 p.m. daily. The tours are free, but an appointment is necessary. Tours end with a tasting of three Schramsberg wines, the cost of which is $6.50. The tour and tasting takes about one hour.

Simi Winery, 16275 Healdsburg Ave., Healdsburg; (707) 433-6981. The lovely Simi Winery in Sonoma County features a redwood grove for picnicing, historic stone cellars and tasting of world-class wines. Open daily from 10 a.m. to 5 p.m., cellar tours are as follows: March through November at 11 a.m., 1 p.m., and 3 p.m. December through February at 11 a.m. and 2 p.m.

St. Clement Vineyard, 1.5 miles north of St. Helena, on Hwy. 29, (800) 331-8266; Tour the Victorian Rosenbaum House, which was the eighth winery built in the Napa Valley. Open daily from 10 a.m. to 4 p.m., tours are given by appointment only -- either 10 a.m. or 2 p.m. Monday - Friday; 10 a.m. and 11:30 a.m. Saturday and Sunday. Picnic tables are also available.

St. Supery, 8440 St. Helena Hwy., Rutherford; (800) 942-0809. Choose from either a guided or a self-guided tour. Open at 9:30 a.m. daily.

Stags Leap Wine Cellars, 5766 Silverado Trail, Napa; (707) 944-2020. Open daily from 10 a.m. to 4:30 p.m., tours are given by appointment. Tasting fee is $5 and includes the glass.

Steltzner Vineyards, 5998 Silverado Trail, Napa; (707) 252-7272. This is one cave in which you can see the light at the end of the tunnel (the cave has a second opening), but only if you have an appointment. No charge, unless more than 15 persons are in the group. The winery is open 10 a.m. to 5 p.m. Mondays through Saturdays, noon to 4 p.m. Sundays.

S. Anderson Vineyard, 1473 Yountville Crossroad, Yountville; (707) 944-8020. Ninety-minute tours of the winery and caves start at 10:30 a.m and 2:30 p.m. daily. The $5 cost includes the tasting of four wines, two in the caves, two in the tasting room at the end of the tour.

Sutter Home Winery, 277 St. Helena Hwy., St. Helena; (707) 963-3104. Take a leisurely walk through the White Zinfandel Gardens around the 19th century Victorain mansion of Sutter Home Winery. Open daily from 10 a.m. to 5 p.m. for tasting.

V. Sattui Winery, 1.5 miles south of St. Helena on Hwy. 29, St. Helena; (707) 963-7774. This small winery features stone cellars and caves for aging and a shady, 2-acre picnic grove. Complimentary tasting. Open daily from 9 a.m. to 6 p.m.